Window Latch Cam Slot Mechanism for Multi-Mode Operation
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Solution Overview
Problem
Window hardware, such as window latches, often require enhanced functionality to operate in multiple modes like locking, sliding, and tilting while maintaining compatibility with existing components and aesthetics.
Innovation Solution
A window latch system comprising a two-handed or one-handed combination latch system with a one-piece spring-loaded latch bolt, a sash lock with an eccentric cam, and a tilt latch assembly that allows for locking, sliding, and tilting operations by adjusting the position of the latch bolt within the latch housing and cam slot, accommodating various window routing profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional window latch designs are used, then manufacturing and assembly are simple, but functionality is limited and cannot operate in multiple modes
Solution Approach 1:
The latch system is designed to perform multiple functions including locking, sliding, and tilting operations through a single integrated mechanism. The cam and latch bolt assembly can engage different positions and modes of operation, allowing one hardware system to replace what would traditionally require multiple separate components, thereby achieving multi-functionality without proportionally increasing complexity
Solution Approach 2:
The latch mechanism incorporates dynamic elements such as the spring-loaded latch bolt and eccentric cam that can transition between different states and positions. The spring allows the latch to automatically return to engaged positions, while the eccentric cam enables smooth transitions between locking, sliding, and tilting modes, providing adaptive functionality responsive to user input
2Adaptability or versatility
If existing window components are used, then compatibility with existing frames is maintained, but enhanced functionality is not achieved
Solution Approach 1:
The latch system is divided into distinct functional modules including the cam assembly, latch bolt, spring mechanism, and handle. This segmentation allows each component to be manufactured independently using standard processes, then assembled into the complete multi-functional system. The modular approach enables enhanced functionality while maintaining manufacturing simplicity through standardized production of individual parts
Solution Approach 2:
The invention combines the locking, sliding, and tilting functions into a single integrated latch mechanism rather than using separate systems for each function. The cam and latch bolt assembly serves multiple purposes depending on its position and engagement state, merging what would traditionally be separate hardware systems into one unified component that can be manufactured as a single assembly
3Reliability
If multiple separate latch systems are used for locking, sliding, and tilting, then each function is reliable, but device complexity and assembly increase
Solution Approach 1:
A single latch mechanism with a spring-loaded bolt and eccentric cam is designed to reliably perform locking, sliding, and tilting functions. The reliability is maintained through the robust spring engagement mechanism that ensures positive latching in each mode, while the eccentric cam geometry provides reliable mechanical advantage for transitioning between functions, all within one integrated system rather than multiple separate mechanisms
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy manufacturing and minimal assembly while providing flexible operation modes, ensuring compatibility with existing window frames and enhancing functionality without compromising traditional aesthetics.
Implementation Method 1
a one-piece spring-loaded latch bolt
Data Source
AI summary
A window combination latch (140) includes a sash lock (142) and tilt a latch assembly (230). The sash lock (142) installs on a top rail of a window sash (110) and includes a cam (214) that rotatably couples with a keeper (144) to lock the window sash (110). The cam (214) includes a slot (320). The latch assembly (230) when installed has a tip (422) of a latch bolt (232) adjacent to a surface of a stile (112) of the window sash (110) and a head (412) of the latch bolt (232) engaged in the slot (320). The latch bolt (232) may be a one-piece structure that may include a flexible extension (414).